Multiple choice

The encryption method uses _____ as a parameter.

  1. key

  2. lock

  3. unlock

  4. none of these

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Encryption algorithms require a key as a parameter - it's the secret that determines the specific transformation. Without the key, the encryption or decryption cannot be performed correctly. The same plaintext encrypted with different keys produces different ciphertexts.